./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:24,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:24,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:21:24,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:24,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:24,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:24,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:24,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:24,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:21:24,279 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:21:24,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:24,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:24,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:24,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:24,283 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:24,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:24,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:21:24,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:24,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:24,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:21:24,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:24,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:21:24,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:21:24,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:24,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:24,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:24,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:24,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:24,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:24,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:24,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:24,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:21:24,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:24,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:24,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:24,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:24,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:21:24,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:24,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:24,293 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 [2023-11-21 22:21:24,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:24,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:24,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:24,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:24,677 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:24,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2023-11-21 22:21:27,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:28,292 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:28,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2023-11-21 22:21:28,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/data/b5ca48c63/6556588de9cc43d49ad588769755a59d/FLAGaaad5b7c5 [2023-11-21 22:21:28,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/data/b5ca48c63/6556588de9cc43d49ad588769755a59d [2023-11-21 22:21:28,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:28,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:28,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:28,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:28,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:28,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:28" (1/1) ... [2023-11-21 22:21:28,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192c4bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:28, skipping insertion in model container [2023-11-21 22:21:28,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:28" (1/1) ... [2023-11-21 22:21:28,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:28,814 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2023-11-21 22:21:28,823 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2023-11-21 22:21:30,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,042 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,089 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,094 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,096 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,097 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,576 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:21:30,578 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:21:30,580 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:21:30,581 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:21:30,584 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:21:30,585 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:21:30,586 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:21:30,587 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:21:30,588 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:21:30,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:21:30,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:30,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:31,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:31,110 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2023-11-21 22:21:31,111 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2023-11-21 22:21:31,174 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,175 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,175 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,195 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,196 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,266 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:21:31,267 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:21:31,268 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:21:31,269 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:21:31,270 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:21:31,271 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:21:31,272 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:21:31,273 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:21:31,273 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:21:31,278 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:21:31,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2023-11-21 22:21:31,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:21:31,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2023-11-21 22:21:31,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:31,762 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,762 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,762 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,762 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,763 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,763 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,763 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,763 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,763 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,764 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,764 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,764 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,764 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,764 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,764 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,765 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,765 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,765 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:31,774 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:31,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31 WrapperNode [2023-11-21 22:21:31,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:31,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:31,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:31,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:31,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:31,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,008 INFO L138 Inliner]: procedures = 689, calls = 2623, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 799 [2023-11-21 22:21:32,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:32,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:32,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:32,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:32,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,041 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,211 INFO L187 HeapSplitter]: Split 536 memory accesses to 7 slices as follows [2, 5, 256, 239, 25, 6, 3] [2023-11-21 22:21:32,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:32,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:32,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:32,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:32,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (1/1) ... [2023-11-21 22:21:32,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:32,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:32,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-21 22:21:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-21 22:21:32,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:21:32,427 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 22:21:32,427 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 22:21:32,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:21:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:21:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:21:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:21:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:21:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:21:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:21:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:21:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:21:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:21:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:21:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:21:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:21:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:21:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 22:21:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 22:21:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 22:21:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:32,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 22:21:32,431 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 22:21:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-21 22:21:32,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-21 22:21:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:21:32,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:21:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:21:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:21:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:21:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:21:32,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:21:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 22:21:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 22:21:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 22:21:32,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:21:32,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:21:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:21:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:21:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:21:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:21:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:21:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2023-11-21 22:21:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2023-11-21 22:21:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:21:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:21:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:21:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:21:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:21:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:21:32,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:21:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_right_trim_pred [2023-11-21 22:21:32,441 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_right_trim_pred [2023-11-21 22:21:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:21:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:21:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:21:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:21:32,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:21:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:21:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:21:32,804 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:32,808 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:34,477 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:35,088 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:35,089 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:21:35,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:35 BoogieIcfgContainer [2023-11-21 22:21:35,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:35,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:35,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:35,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:35,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:28" (1/3) ... [2023-11-21 22:21:35,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae169f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:35, skipping insertion in model container [2023-11-21 22:21:35,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:31" (2/3) ... [2023-11-21 22:21:35,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae169f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:35, skipping insertion in model container [2023-11-21 22:21:35,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:35" (3/3) ... [2023-11-21 22:21:35,107 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_right_trim_pred_harness.i [2023-11-21 22:21:35,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:35,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:21:35,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:35,209 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c5ce660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:35,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:21:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-21 22:21:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 22:21:35,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:35,229 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:35,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:35,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1197547409, now seen corresponding path program 1 times [2023-11-21 22:21:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:35,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33857630] [2023-11-21 22:21:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:21:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:21:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:21:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:21:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:21:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:21:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 22:21:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:21:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:21:36,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:36,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33857630] [2023-11-21 22:21:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33857630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:36,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:36,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74680793] [2023-11-21 22:21:36,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:36,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:21:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:21:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:21:36,348 INFO L87 Difference]: Start difference. First operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:21:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:36,633 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2023-11-21 22:21:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:21:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2023-11-21 22:21:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:36,646 INFO L225 Difference]: With dead ends: 103 [2023-11-21 22:21:36,646 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 22:21:36,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:21:36,661 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:36,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:21:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 22:21:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-21 22:21:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:21:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2023-11-21 22:21:36,723 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 40 [2023-11-21 22:21:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:36,725 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2023-11-21 22:21:36,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:21:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2023-11-21 22:21:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-21 22:21:36,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:36,730 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:36,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:36,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:36,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1979721274, now seen corresponding path program 1 times [2023-11-21 22:21:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701245983] [2023-11-21 22:21:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:36,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:21:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:21:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:21:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:21:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:21:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:21:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 22:21:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 22:21:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:21:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:40,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701245983] [2023-11-21 22:21:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701245983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:40,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:40,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-21 22:21:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943396085] [2023-11-21 22:21:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:40,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:21:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:40,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:21:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:21:40,947 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:21:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:43,244 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2023-11-21 22:21:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:21:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2023-11-21 22:21:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:43,248 INFO L225 Difference]: With dead ends: 89 [2023-11-21 22:21:43,248 INFO L226 Difference]: Without dead ends: 87 [2023-11-21 22:21:43,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:21:43,250 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 54 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:43,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 460 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 22:21:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-21 22:21:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2023-11-21 22:21:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-21 22:21:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2023-11-21 22:21:43,270 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 42 [2023-11-21 22:21:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:43,270 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2023-11-21 22:21:43,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:21:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2023-11-21 22:21:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 22:21:43,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:43,273 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:43,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:43,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:43,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash 891537205, now seen corresponding path program 1 times [2023-11-21 22:21:43,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564048078] [2023-11-21 22:21:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:43,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:21:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:21:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:21:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:21:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:21:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:21:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 22:21:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:21:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:21:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:21:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564048078] [2023-11-21 22:21:51,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564048078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443370737] [2023-11-21 22:21:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:51,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:51,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:51,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:51,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e610b2-a470-4e3e-89f9-fe084c314530/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:21:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:52,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-21 22:21:52,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:52,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:21:52,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:21:54,094 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 22:21:54,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 22:21:54,658 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-21 22:21:54,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 10 [2023-11-21 22:21:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:21:55,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:57,591 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 10832 disjunctions. This might take some time... [2023-11-21 22:22:08,088 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 10816 disjunctions.